Band Dependent Interlayer -Electron Hybridization in
- Fudan Univ., Shanghai (China); China Academy of Engineering Physics, Mianyang (China)
- Fudan Univ., Shanghai (China)
- China Academy of Engineering Physics, Mianyang (China)
- Zhejiang Univ., Hangzhou (China)
- Paul Scherrer Inst. (PSI), Villigen (Switzerland)
- Harwell Science and Innovation Campus, Didcot (United Kingdom)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Zhejiang Univ., Hangzhou (China); Collaborative Innovation Center of Advanced Microstructures, Nanjing (China)
- Fudan Univ., Shanghai (China); Collaborative Innovation Center of Advanced Microstructures, Nanjing (China)
A key issue in heavy fermion research is how subtle changes in the hybridization between the 4 (5 ) and conduction electrons can result in fundamentally different ground states. stands out as a particularly notable example: when replacing Rh with either Co or Ir, antiferromagnetism gives way to superconductivity. In this photoemission study of , we demonstrate that the use of resonant angle-resolved photoemission spectroscopy with polarized light allows us to extract detailed information on the 4 crystal field states and details on the 4 and conduction electron hybridization, which together determine the ground state. We directly observe weakly dispersive Kondo resonances of electrons and identify two of the three Ce4 $$^{1}_{5/2}$$ crystal-electric-field levels and band-dependent hybridization, which signals that the hybridization occurs primarily between the Ce 4 states in the CeIn3 layer and two more three-dimensional bands composed of the Rh 4 and In 5 orbitals in the RhIn2 layer. Our conclusions allow us to connect the properties observed at elevated temperatures with the unusual low-temperature properties of this enigmatic heavy fermion compound.
- Research Organization:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC). Basic Energy Sciences (BES) (SC-22); National Natural Science Foundation of China (NSFC); USDOE
- Grant/Contract Number:
- 89233218CNA000001
- OSTI ID:
- 1525818
- Alternate ID(s):
- OSTI ID: 1422863
- Report Number(s):
- LA-UR-18-21614; PRLTAO
- Journal Information:
- Physical Review Letters, Vol. 120, Issue 6; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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